The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Vol. XXXVII. Part B3b. Beijing 2008 
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extract the correct infrared textures for the given building 
model. So, two main conclusions can be made. 
First: The estimated model consisting of relative surface planes 
and a relative camera path can be used to refine the measured 
camera path. 
Second: The estimated model can be used to link the given 3d 
model to the point cloud extracted from the image sequence to 
refine the surface plane estimation. 
Both strategies allow improving the reconstruction of building 
parts, which can not be reconstructed directly. A better camera 
position leads to a better projection and a better surface plane 
estimation leads to a better assignment of points of the point 
cloud. Further investigation will concentrate on those aspects. 
ACKNOWLEDGEMENTS 
This work is part of the DFG (German Research Society) 
research project “Enrichment and Multi-purpose Visualization 
of Building Models with Emphasis on Thermal Infrared 
Data“ (STI 545/1-2) as part of the bundle project 
“Interoperation of 3D Urban Geoinformation (3DUGI)”. The 
authors thank Dr. Clement, Dr. Schwarz and Mr. Kremer of 
FGAN-FOM, Ettlingen, for their assistance during the 
recording campaign. And special thanks to Prof. Helmut Mayer 
for providing his software of the 5-point algorithm and plane 
estimation. 
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